An artificial stone is disclosed for use in creating a covering for a supporting surface. The artificial stone includes a body for placement on the supporting surface, which is shaped for mating engagement with like stones with intermediate perimeter joints to produce a continuous surface covering. The stone has a facing surface on the body, which facing surface has a contour defining a surface area and is subdivided by at least one simulated joint into a major surface portion and at least one minor surface portion. The major surface portion is free of simulated joints and extends over at least about 60% of the total surface of the facing surface. The stone further includes at least one perimeter recess in the body for generating a gap between the stone and another like stone in mating engagement therewith, which gap is wider than adjacent the adjoining perimeter joint. stones of this construction can easily be arranged in a regular, repeated pattern to generate a continuous covering for the supporting surface with the surface of the resulting covering having an irregular, natural appearance. The irregular top contours of the stones, the uneven division of the facing surface and the perimeter recesses and the resulting gaps between mating stones simulate the appearance of a natural stone surface covering for walkways, roadways, pavements or walls.
|
1. An artificial stone for covering a supporting surface, comprising:
a base portion having a base surface forming a lowermost surface of the base portion for placement on the supporting surface, the base portion having a body shape with a body contour for mating engagement of the artificial stone with other like stones in a repeating pattern with intermediate perimeter joints;
a top portion positioned above the base portion and having a facing surface forming an uppermost surface of the top portion, the facing surface having a total surface area defined by an irregular facing contour and being subdivided by at least one simulated joint into a continuous, major surface portion and at least one minor surface portion; the major surface portion being free of any simulated joints and having an appearance of a slab and the at least one minor surface portion having an appearance of a filler stone, wherein the at least one simulated joint extends from the facing surface, through at least a portion of the top portion, and without extending into the base portion; and
at least one perimeter recess extending from the facing surface, through the top portion, and through at least a portion of the base portion for generating a gap between the artificial stone and another like artificial stone in mating engagement therewith, the gap having a larger width than an adjoining perimeter joint.
2. The artificial stone of
4. The artificial stone of
5. The artificial stone of
6. The artificial stone of
7. The artificial stone of
8. The artificial stone of
9. The artificial stone of
10. The artificial stone of
12. The artificial stone of
13. The artificial stone of
16. The artificial stone of
17. The artificial stone of
18. The artificial stone of
19. The artificial stone of
20. A set of artificial stones, comprising at least two artificial stones as defined in
21. The set of artificial stones as defined in
22. The set of artificial stones as defined in
23. The set of artificial stones as defined in
24. The set of artificial stones as defined in
|
This application is a U.S. national phase patent application under 35 U.S.C. 371 of International Patent Application No. PCT/CA2009/000688 filed May 20, 2009, which claims the benefit of U.S. Provisional Application No. 61/054,983 filed May 21, 2008. The contents of all of which are incorporated herein by this reference.
The present invention relates to surface coverings and artificial stones for forming a surface covering. More particularly, the invention relates to stones, flagstones, pavers, bricks, veneer blocks and tiles for forming surface coverings, such as walkways, roadways, pavements or wall coverings.
It is well known in the art that surfaces, such as walkways, driveways, patios, floors, work surfaces, walls and other interior or exterior surfaces can be covered for durability and aesthetics with flagstones, stones, bricks, pavers, tiles and other architectural surface covering elements. Natural stone surface coverings are constructed by fitting together irregularly sized and shaped flat stones, such as flagstone, stone and slate. This work requires a skilled stonemason to select, cut and fit the stones. It is labor intensive, and accordingly expensive. To minimize installation time, the stonemason uses a combination of large stones or slabs, for achieving as much surface coverage in as short a time as possible, and a collection of small stones, so called filler stones, for filling in any gaps between the irregularly shaped large stones.
Various efforts have been made to develop artificial building elements, such as bricks, stones, flagstones, pavers, or the like with the appearance of natural stone. Such artificial building elements are usually relatively inexpensively mass produced by molding them from concrete, usually in a dry casting operation. They are typically provided in geometric shapes, such as triangles, squares, rectangles and hexagons, or in irregular shapes, or combinations thereof. The goal is to provide units of preset shape, which can be placed side by side in mating arrangement to produce a continuous surface covering. However, even if irregularly shaped stones are used, the repetitive nature of the installation usually results in a repeating, sometimes even geometric pattern, or at least a ‘linear line effect’. This counteracts any ‘natural’ appearance of the overall surface covering, despite the almost ‘natural’ appearance of the individual elements. Furthermore, even irregularly shaped stones with randomly placed simulated joints embossed into their facing surface, when laid out in mating arrangement still produce a repeating pattern, since the overall shape of the stones becomes apparent from the pattern of the perimeter joints around the stones, once multiple stones are laid out in a repeating pattern. Thus, these stones still fail to provide an aesthetically pleasing appearance with a degree of natural irregularity close to that of custom installations of natural stone.
Thus, there still exists a need for an artificial stone, flagstone, paving stone or the like which upon installation in a mating array with like artificial stones provides the appearance of a natural stone installation with large slabs and intermediate small filler stones.
Throughout the description, the expressions ‘stone’ and ‘flagstone’ are used interchangeably without distinction and to designate any blocks, stones, flagstones, paving stones, pavers, siding bricks or blocks, veneer bricks, and the like. Therefore, the expressions “artificial stone” and “artificial flagstone” should be given their broadest possible meaning and should be interpreted to encompass any and all artificial stone elements for forming any surface covering.
The term “artificial” is used throughout this specification to designate any non-naturally occurring product.
The term “regular” as used in relation to the geometric shape of various parts of the artificial stone in this specification is used to define a regular geometric shape.
The term “simulated joint” as used in this specification describes all structures which penetrate the facing surface of an artificial stone to divide the facing surface into surface portions. The simulated joints preferably extend only through a portion of the height of the artificial stone, so that when the unit is installed, they provide the appearance of a regular joint between individual stones, giving the visual impression of an arrangement of smaller subunits. The simulated joints preferably are sufficiently deep to retain the joint filler material used for installation of the artificial stones, such as sand or mortar, but do not affect the integrity of the stone during normal handling and installation. The term “perimeter recess” is used throughout this specification to describe a recess, cut-away, or notch along the outer edge of the artificial stone, which extends into the body of the stone from the perimeter and up to the surface of the stone to create the appearance of a cut-away or notch in the body of the stone at the perimeter. The perimeter recess gives the artificial stone the appearance of a natural stone having peripheral shape imperfections and results in a gap between the stone and another like stone placed in engagement therewith. Since the perimeter recess extends into the body from the perimeter, the gap is wider then the adjoining perimeter joint.
The overall appearance of a mating array of artificial flagstones varies depending on the degree of subdivision of the facing surface of the individual stones. However, even when artificial flagstones with mutually different surface subdivisions are used, once they are arranged in a regular array, a discernible repeating pattern appears, irrespective of the surface subdivisions of the individual stones. This is due to the perimeter joints between the stones forming a regular, repeating pattern, since all the stones have the same body shape. It has now been surprisingly discovered that even a repeating pattern of flagstones of substantially identical body shape can be made to have a substantially random or natural appearance. This can be achieved by not only dividing the facing surface of the individual stones by one or more simulated joints to provide the appearance of a large stone or slab and one or more adjacent and smaller filler stone, but by further providing the stones with a perimeter recess. The natural appearance effect becomes especially apparent when the facing surface is designed to include a major area free of any subdividing, simulated joints so that the resulting artificial stone has a facing surface including a major surface area free of any simulated joints and having the appearance of a slab. It has been surprisingly discovered that even when artificial stones in accordance with the invention are installed in a repeating installation pattern with intermediate perimeter joints, a substantially random or natural appearance is generated by the inclusion of the perimeter recess. Including one or more recesses in one or more stones in the repeating pattern, preferably in each stone, results in one or more holes or gaps in the surface covering produced by the mating array, which gaps are then filled with sand, mortar or like filler material after placement of the artificial stones to form the surface covering. These gaps appear identical to gaps found in arrangements of natural stones due the shape mismatch of natural stones. Most importantly, those gaps are provided to interrupt the perimeter joints between adjoining stones and to thereby break up the perimeter joint pattern in an array of like stones arranged in a repeating installation pattern. The resulting overall appearance of the surface covering of artificial stones of the invention is then one of a multitude of larger stones, intermediate smaller stones and joints between the stones, with some joints widening out into the gaps formed by the perimeter recesses. Each gap is preferably larger than the adjoining perimeter joint and at most 5 times as large as the perimeter joint.
In one preferred aspect, the present invention provides an artificial flagstone for covering a supporting surface, which flagstone includes a body with a facing surface and base surface for placement on the supporting surface. The body has a body shape with a polygonal body contour which defines the footprint of the stone. The facing surface has a total surface area defined by a facing contour. The facing surface is subdivided by at least one simulated joint into a major surface portion and at least one minor surface portion. The major surface portion is continuous and free of simulated joints, extends over at least about 60% of the total surface area and has the appearance of a slab, while the minor surface portion has the appearance of a filler stone.
In another preferred aspect of the invention, the major surface portion extends over at least about 65%, preferably at least about 68%, most preferably at least about 70% of the total surface area.
In still another preferred aspect of the invention, the major surface portion extends over at least about 75%, preferably at least about 80% of the total surface area, most preferably at least about 85%.
In a further preferred aspect of the invention, the minor surface portion extends over at most about 30% of the total surface area and is free of simulated joints. In still a further preferred aspect of the invention, the surface area is divided into a major surface portion and a pair of minor surface portions, the combined area of the minor surface portions being at most about 30% of the total surface area. Preferably, the surface area is divided into a major surface portion and a plurality of minor surface portions, the combined area of the minor surface portions being at most about 35%, preferably at most about 30%, most preferably at most about 25% of the total surface area and the simulated joints cover at most about 5% of the total surface area.
In yet a further preferred aspect of the invention, the major surface portion of the facing surface extends over at least 70% of the footprint of the stone, the minor surface portion extends over at least 15% of the footprint, the simulated joints cover at most 5% of the footprint and the perimeter recesses cover at most 10% of the footprint.
Artificial flagstones in accordance with the invention for covering a supporting surface preferably include a polygonal footprint and a body shaped as a right prism for mating engagement of the flagstone with like flagstones in an array or repeating installation pattern for producing a surface covering.
Preferably, the facing surface has a facing contour fitting within the footprint of the body. The facing surface preferably has a surface structure with the appearance of natural stone. The contour of the facing surface is preferably irregular for enhancing the natural appearance of the stone. To further enhance the natural appearance, the facing surface preferably has at least one irregularly shaped protrusion or depression for giving the facing surface the appearance of natural stone. More preferably, the facing surface has at least one irregularly shaped protrusion and at least one irregularly shaped depression.
Most preferably, the perimeter recess extends from the facing surface all the way to the base surface so that a gap or hole is formed between the flagstone and an adjacent, mating flagstone. The gap preferably has a width which is larger then the width of the adjoining perimeter joint. The perimeter recess can be placed anywhere along the perimeter of the artificial stone, but is preferably placed at a corner of the flagstone, or adjacent an end of a simulated joint to further enhance the natural appearance of a surface covering of mating flagstones in accordance with the invention.
Artificial stones in accordance with the invention are preferably made by dry casting and the perimeter recess is preferably made by a division plate used in the dry cast mold. In a variant, the facing surface has at least two areas of different elevation, which areas are preferably irregularly shaped areas.
In another aspect of the invention, the artificial stone is breakable along at least one of the simulated joints. This allows breaking off one or more of the minor surface portions, while still rendering possible a mating engagement of the broken artificial stone with other like units, either complete or broken off, and provides greater flexibility for size adjustment during installation. The simulated joints may in some locations extend all the way to the base surface of the artificial stone to facilitate breaking off of the minor surface portion, as long as this does not affect the integrity of the stone during normal handling and installation.
In a further preferred aspect of the invention, the artificial stone is shaped and constructed as a paving stone. The artificial stone of the invention is preferably made by dry casting and is most preferably is a dry cast paving stone.
In still another preferred aspect, the invention provides a set of artificial stones for producing a surface covering in a regular, repeated pattern, but with an irregular surface appearance, simulating the appearance of natural stone. The set includes at least two flagstones with a body of polygonal cross-section and shaped as a right prism to fit together in a mating arrangement, and an irregularly shaped facing surface. The facing surface of one flagstone in the set is different in appearance from the facing surface of every other flagstone in the set and especially differs in the placement and/or number of the simulated joints and the placement and/or number of the perimeter recess regions. Preferably, the set of flagstones includes all the stones made within a multi-cavity dry casting frame, whereby each cavity produces a stone with a different facing surface.
Other objects and advantages of the invention will become apparent upon reading the detailed description and upon referring to the drawings in which:
Before explaining the present invention in detail, it is to be understood that the invention is not limited to the preferred embodiments contained therein. The invention is capable of other embodiments and of being practiced or carried out in a variety of ways. It is to be understood that the phraseology and terminology employed herein are for the purpose of description and not of limitation.
The present invention provides artificial stones, flagstones, bricks, pavers, tiles and the like for forming surface coverings, such as pavements, walkways or wall coverings, having the appearance of a natural stone covering.
A preferred artificial stone 100 in accordance with the invention as shown in
The major surface portion preferably extends over about 65% of the total surface area, more preferably at least 70%, even more preferably at least 75%, most preferably about 80%.
The facing surface 32 preferably has a polygonal facing contour 33. The simulated joints 34 are preferably positioned to divide off one or more points of the polygonal facing surface 32 (
The simulated joints 34 preferably extend through a portion of the height of the stone 100, so that when the stone is laid out, it gives the visual impression of an arrangement of smaller units, while still retaining the advantages of handling only a larger block. In another aspect of this embodiment, the joints 34 can be sufficiently deep so that the artificial stone 100 may be breakable along the joints 34. This allows breaking off a section of the stone, while still rendering possible a mating engagement of the broken stone with other ones. The simulated joints 34 may in some locations extend all the way to a base surface 19 of the artificial stone to facilitate the breaking off, as long as this does not affect the integrity of the stone during normal handling and installation.
A preferred artificial stone 100 in accordance with the invention as illustrated in
The intermediate portion 50 preferably has at least one circumferential portion which it is outwardly tapered. The intermediate portion 50 preferably has at least one sidewall 52 extending between the rim 39 and a sidewall 11 of the base portion 10 and joining the base portion sidewall 11 and the rim 39 at an acute angle of 0 to 25°. This construction greatly facilitates the dry casting operation by ensuring an even distribution of the concrete mix and, thus, an even fill of the mold. Damage to the freshly molded stone during stripping and disengagement from the mold due to sharp corners in the mold and adhesion to mold surfaces is also minimized with this construction.
In the embodiments shown in
The artificial stone 100 is preferably manufactured by dry casting. The facing contour 33 of the facing surface 32 preferably fits into and is located above the footprint of the base portion 10 (see
The outline or facing facing contour 33 of the facing surface 32 is preferably irregular for achieving a natural appearance. To further enhance the natural appearance of the top portion 30, the facing surface 32 preferably has at least one irregularly shaped protrusion 35 or depression 36 (see
To avoid the generation of the “linear line effect” often observed with regularly shaped artificial stones in the art, especially those with a polygonal facing surface, the stone 100 of the present invention is preferably provided with a facing surface 32 which is unevenly divided by one or more simulated joints to provide the appearance of a large stone and a small stone.
The exemplary artificial flagstones shown in
The facing surface 32 preferably has a polygonal facing facing contour 33. The simulated joints 34 are preferably positioned to divide off one or more points or corners of the polygonal facing surface 32. When more than one simulated joint 34 is provided, (
In this embodiment, the facing surface 32 has a substantially rectangular facing contour 33. The simulated joints 34 are positioned to divide off one side of the rectangular facing surface 32. When more than one simulated joint 34 is provided, (
The facing surface 32 preferably has a polygonal facing facing contour 33. The simulated joints 34 are preferably positioned to divide off one or more points or corners of the polygonal facing surface 32. When more than one simulated joint 34 is provided, (
The facing surface 32 preferably has an irregular, but overall substantially rectangular facing facing contour 33. The simulated joints 34 are preferably positioned to divide off one or more points or corners of the polygonal facing surface 32. When more than one simulated joint 34 is provided, each joint can be positioned to divide off a separate minor portion 42, 43, respectively located at different corners, sides or points of the facing surface. Alternatively, one simulated joint 34 can be used to divide off a minor portion 42 along one side of the facing surface 32 and one or more additional simulated joints 34 can be used to subdivide this minor portion 42 into multiple minor portions 43, 44, 45. It is also within the confines of the invention to subdivide the minor portion 42 into multiple sub-portions (43, 44, 45) by a plurality of simulated joints 34, whereby one or more of the sub-portions are no longer located at the facing facing contour 33 (see
In a particularly preferred embodiment, as illustrated in
The preselected body contour 270 or footprint of the artificial stones of
Preferably, the peripheral recesses 260 extend over the full height of the artificial stone 200 as shown in
Similar to the stones of
In another aspect, the invention provides a set of artificial stones, wherein the top surface texture of each stone in the set is different from the top surface texture of every other stone in the set. Such a set of stones preferably includes all the stones made within a multi-cavity dry casting frame, whereby each cavity produces one stone with a facing surface that is unique within the set. The base portions of the stones in the set preferably have a polygonal cross-section and are shaped as a right prism so that the base portions fit together in a mating arrangement of the flagstones in the set and flagstones of other like sets.
In a preferred method in accordance with the invention, the set of artificial stones is made in a dry casting operation using a multi-cavity mold having a tamper shoe with a differently shaped compression surface for each cavity in the mold to produce a different surface texture for the artificial stone made in each cavity. The method preferably includes the steps of providing a multi-cavity dry casting frame, each mold cavity of the dry casting frame having sidewalls for shaping the body of the artificial stone, at least one division plate in the dry casting frame separating adjacent cavities having a protrusion for extending into one cavity and forming a perimeter recess in a sidewall of the dry cast stone made in the cavity, placing the multi-cavity dry casting frame on a press support, filling the mold cavity with a dry cast concrete mixture and compressing the dry cast concrete mixture with the tamper shoe having a different surface structure for each mold cavity, stripping the compressed pre-product from the mold cavity, and curing the stripped pre-product to form the set of artificial stones. In a preferred embodiment, the method includes the step of replacing the division plate in the dry casting frame having the protrusion with a division plate having one or more different protrusions to form one or more different perimeter recesses in the dry cast artificial stones.
From the above, it can easily be understood that the artificial stone according to the present invention can advantageously be used for creating patios, pathways, sidewalks or stepping stones for non-limitative examples. Moreover, the artificial stone of the present invention can advantageously be easily laid out to form a pavement or a wall surface where no straight lines and hardly any repetition can be seen, giving as a result, the look of old world craftsmanship, replicating the complexity of a natural stone assembly.
Furthermore, it will be appreciated that all of the artificial stone of a pavement can be the same, but still create a visually “random” effect in which no straight lines can be seen.
The artificial stone according to the present invention has several advantages over prior art products. Indeed, its installation is very easy, does not require distinctive markers for guiding the installation, and does not require professional skills. The resulting pavement has no “linear effect”, that is, a person walking thereon would not see any straight line in front of him or her. It has a random look, achieved with a single stone design.
While the invention has been described with a certain degree of particularity, it is understood that the invention is not limited to the embodiments set forth herein for purposes of exemplification, but is to be limited only by the scope of the attached claims, including the full range of equivalency to which each element thereof is entitled.
Although the present invention has been explained hereinabove by way of preferred embodiments thereof, it should be pointed out that any modifications to these preferred embodiments within the scope of the appended claims are not deemed to alter or change the nature and scope of the present invention.
Castonguay, Bertin, Daoust, Robert, Lacas, Marc-Andre
Patent | Priority | Assignee | Title |
10081918, | Oct 19 2012 | Oldcastle Architectural, Inc. | Paving stones |
10087585, | Jun 18 2012 | Oldcastle Building Products Canada Inc. | Dual-unit paving system |
10240301, | Oct 25 2004 | Oldcastle Building Products Canada, Inc. | Artificial flagstone for providing a surface with a natural random look |
10337152, | Aug 02 1919 | Oldcastle Building Products Canada Inc. | Dual-unit paving system |
10550509, | May 03 2018 | Weather resistant outdoor clothes dryer | |
10753101, | Dec 09 2016 | Baton, LLC | Artificial lightweight stone |
11498357, | Jun 20 2019 | CertainTeed LLC | Randomized surface panel kit and surface panel system |
8747019, | Oct 25 2004 | Oldcastle Building Products Canada, Inc. | Artificial flagstone for providing a surface with a natural random look |
8820022, | Mar 15 2013 | KEYSTONE RETAINING WALL SYSTEMS LLC | Building unit with cobble top |
8967907, | Oct 25 2004 | Oldcastle Building Products Canada, Inc. | Artificial flagstone for providing a surface with a natural random look |
9057197, | May 21 2008 | Oldcastle Building Products Canada, Inc. | Artificial stone |
9193215, | Oct 25 2004 | Oldcastle Building Products Canada, Inc. | Artificial flagstone for providing a surface with a natural random look |
9315950, | Oct 19 2012 | OLDCASTLE ARCHITECTURAL, INC | Paving stones |
9404226, | Jun 18 2012 | OLDCASTLE BUILDING PRODUCTS CANADA INC | Dual-unit paving system |
9534396, | Oct 25 2004 | Oldcastle Building Products Canada, Inc. | Artificial flagstone for providing a surface with a natural random look |
9677228, | Oct 25 2004 | Oldcastle Building Products Canada Inc. | Artificial flagstone for providing a surface with a natural random look |
9752288, | Jun 18 2012 | Oldcastle Building Products Canada Inc. | Dual-unit paving system |
9840813, | Oct 19 2012 | Oldcastle Architectural, Inc. | Paving stones |
D695915, | Sep 05 2012 | OLDCASTLE BUILDING PRODUCTS CANADA INC | Paver |
D695916, | Sep 05 2012 | OLDCASTLE BUILDING PRODUCTS CANADA INC | Paver |
D695917, | Sep 05 2012 | OLDCASTLE BUILDING PRODUCTS CANADA INC | Paver |
D695918, | Sep 05 2012 | OLDCASTLE BUILDING PRODUCTS CANADA INC | Paver |
D695919, | Sep 05 2012 | OLDCASTLE BUILDING PRODUCTS CANADA INC | Paver |
D695920, | Sep 05 2012 | OLDCASTLE BUILDING PRODUCTS CANADA INC | Paver |
D695921, | Sep 05 2012 | OLDCASTLE BUILDING PRODUCTS CANADA INC | Paver |
D695922, | Sep 05 2012 | OLDCASTLE BUILDING PRODUCTS CANADA INC | Paver |
D776299, | Jul 01 2015 | Paver | |
D832462, | Apr 05 2016 | Tile | |
D832463, | Apr 05 2016 | Tile | |
D832464, | Apr 05 2016 | Tile | |
ER9806, |
Patent | Priority | Assignee | Title |
1474779, | |||
1479647, | |||
1600787, | |||
1953657, | |||
2050299, | |||
2606428, | |||
2893098, | |||
2991213, | |||
3267823, | |||
3600773, | |||
3870423, | |||
3947192, | Nov 15 1974 | Paving block | |
4026083, | Apr 29 1976 | Betco Block & Products, Inc. | Brickwork form |
4078760, | Apr 29 1976 | Combination die and pallet | |
4105354, | Apr 27 1977 | Pattern forming wheel for uncured concrete surfaces | |
4125341, | Jan 10 1977 | Paving block | |
4131406, | Oct 11 1977 | Tools for making impressions in hardenable materials | |
4135840, | Feb 27 1978 | PUCCINI, JOHN L | Tools for imprinting non-repeating stone patterns in fresh concrete |
4217740, | Jun 07 1978 | Variable mosaic pattern with interchangeable components | |
4231677, | Aug 28 1978 | International Design Systems, Ltd. | Process and apparatus for forming concrete |
4287141, | Nov 22 1976 | National Research Development Corporation | Embankments construction |
4313689, | Sep 04 1976 | Set of paving elements for production of paving and method of using the same | |
4349293, | Jan 11 1979 | Compound block kit | |
4354773, | Feb 15 1979 | Dr. Barth GmbH; F. von Langsdorff Bauverfahren GmbH | Ground covering element having raised portions at the useful side which are separated from one another by dummy gaps, a ground covering element group of such ground covering elements, and a method of producing such ground covering elements |
4407480, | Jan 03 1977 | Precise Forms, Inc. | Textured brick form |
4452419, | Aug 05 1982 | Modular cake pan | |
4510725, | Sep 17 1981 | Building block and construction system | |
4544305, | Feb 01 1984 | Interlocking slab element for covering the ground and the like | |
4609303, | Dec 07 1981 | Slip-form for concrete pathways | |
4627764, | Mar 25 1981 | Paving stone, process for manufacturing same and device for carrying out the manufacturing process | |
4773790, | Jun 04 1986 | SF-VOLLVERBUNDSTEIN - KOOPERATION GMBH OF BREMEN, WEST GERMANY | Groundcovering element, especially (concrete) slab |
4776723, | Jun 02 1987 | Concrete stamping tool | |
4792257, | Sep 12 1986 | HANS RINNINGER U SOHN GMBH U CO , STOLZENSEEWEG 9, 7964 KISSLEGG, GERMANY | Set of paving stones, particularly set of concrete paving stones |
4828426, | Feb 05 1988 | REGIONAL MUNICIPALITY OF OTTAWA-CARLETON, 222 QUEEN ST , OTTAWA, ONTARIO, CANADA, K1P 5Z3; BEAVER ASPHALT PAVING COMPANY LIMITED, RIDEAU RD , TOWNSHIP OF GLOUCESTER, P O BOX 4208, STATION E, OTTAWA, ONTARIO, CANADA, K1S 5B2 | Device for imprinting surface of fresh concrete |
4838728, | Jan 04 1988 | Kit of hand-held tools for making a patterned impression in a cementitious material | |
4921372, | Nov 06 1989 | Sidewalk scribing tool | |
5051023, | Jul 14 1987 | Chichibu Cement Co., Ltd.; Inax Corp.; ILB Co., Ltd. | Fracture-free layered paving blocks |
5108219, | Dec 14 1990 | Interlocking paving stone | |
5201843, | Feb 11 1992 | Interlocking paving stone for open drainage ground cover pattern | |
5211895, | Apr 30 1991 | Molding process for forming a concrete paving block | |
5230584, | Aug 16 1991 | CAPITOL ORNAMENTAL CONCRETE SPECIALTIES, INC | Paving block structures |
5244303, | Dec 14 1990 | Interlocking paving stone | |
5267810, | Sep 25 1991 | Paving block | |
5277514, | Jan 17 1990 | GLICKMAN, MICHAEL | Block for paving and like uses |
5281047, | May 28 1992 | Masonry landscaping modules and methods of landscaping | |
5286139, | Feb 03 1992 | Interlocking paving stone for closed and open drainage patterns | |
5342142, | Apr 04 1989 | F VON LANGSDORFF LICENSING LIMITED | Angular paving stone for paving areas |
5348417, | Nov 30 1992 | SCHEIWILLER, ROLF | Compound pavement stone |
5487526, | Jun 16 1992 | Mold device for forming concrete pathways | |
5496129, | Aug 06 1993 | Frangible interlocking paving stone | |
5625990, | Nov 22 1995 | Inerlocking ground covering element | |
5713155, | Nov 07 1994 | KIENLE, ALEXANDER | Grid plate for stabilizing natural ground |
5797698, | Apr 10 1996 | F VON LANGSDORFF LICENSING LTD | Paving elements for the water-permeable reinforcement of surfaces |
5884445, | Dec 02 1997 | OLDCASTLE, INC | Paving block array |
5921705, | Apr 15 1994 | U.P.S. Limited | Surfacing blocks |
6168347, | Feb 27 1998 | OLDCASTLE BUILDING PRODUCTS CANADA INC | Set of paving stones |
653515, | |||
6715956, | Feb 03 2003 | Walkway system | |
6881463, | Mar 24 2003 | KEYSTONE RETAINING WALL SYSTEMS, INC | Irregular, rotational tessellation surface covering units and surface covering |
7393155, | Sep 18 2003 | KEYSTONE RETAINING WALL SYSTEMS, INC | Irregular tessellated building units |
7425106, | Sep 13 2004 | ANCHOR WALL SYSTEMS, INC | Concrete pavers positioned in a herringbone pattern |
7637688, | Sep 18 2003 | KEYSTONE RETAINING WALL SYSTEMS, INC | Irregular, tessellated building units |
7850393, | Dec 15 2006 | OLDCASTLE BUILDING PRODUCTS CANADA, INC | Dry-cast concrete block |
7988382, | Oct 25 2004 | Oldcastle Building Products Canada, Inc. | Artificial flagstone for providing a surface with a natural random look |
8132981, | Oct 25 2004 | Oldcastle Building Products Canada, Inc. | Artificial flagstone for providing a surface with a natural random look |
8226323, | Sep 26 2007 | OLDCASTLE BUILDING PRODUCTS CANADA INC | Covering unit |
8337116, | Oct 25 2004 | Oldcastle Building Products Canada, Inc. | Artificial flagstone for providing a surface with a natural random look |
20030007834, | |||
20070077387, | |||
20070217865, | |||
20080209828, | |||
20080240857, | |||
20100236174, | |||
20100307092, | |||
20110067333, | |||
20120003040, | |||
20120189386, | |||
20120247050, | |||
BE570711, | |||
CA1150553, | |||
CA2083215, | |||
CA2519296, | |||
CA2569998, | |||
CA2616200, | |||
CH562921, | |||
204803, | |||
230478, | |||
231926, | |||
D257824, | Feb 27 1978 | Tool for imprinting non-repeating stone patterns in fresh concrete | |
D257825, | Feb 27 1978 | Tool for imprinting non-repeating stone patterns in fresh concrete | |
D272037, | Jan 09 1981 | Tool for imprinting fish scale patterns in fresh concrete | |
D281505, | Oct 17 1983 | JOHNSON & JOHNSON VISION PRODUCTS, INC | Molding frame for lenses |
D314240, | Oct 31 1986 | Lawn stone | |
D342528, | Aug 14 1991 | Plastic mold | |
D343237, | Jan 25 1990 | Paving block | |
D349967, | Apr 03 1992 | Concrete Stone and Tile Corporation | Paving stone |
D397802, | Nov 26 1996 | CRH OLDCASTLE, INC A CORP OF DELAWARE; CRH OLDCASTLE, INC, A DELAWARE CORPORATION; CRH OLDCASTLE, INC , A DE CORP | Paving block |
D399978, | Sep 29 1993 | F VON LANGSDORFF LICENSING LIMITED | Paving element |
D404147, | Dec 02 1997 | OLDCASTLE, INC , A DELAWARE CORPORATION | Paving block |
D424212, | Mar 04 1999 | Paving brick | |
D429343, | Feb 20 1998 | OLDCASTLE BUILDING PRODUCTS CANADA, INC | Paving stone |
D429530, | Jul 14 1999 | Interlocking paving block | |
D431870, | Mar 01 1999 | Segmental concrete stone unit | |
D431871, | Apr 29 1999 | Paving stone | |
D439677, | Aug 25 2000 | OLDCASTLE MART STONE HOLDINGS, INC | Paver stone |
D452015, | Dec 14 1999 | Ply Gem Pacific Windows Corporation | Flooring or paving stone |
D463866, | Apr 19 2000 | GANA BLOCK CO , LTD | Building block with aesthetic stone facade |
D488566, | Jun 26 2003 | Paver block | |
D492796, | Oct 01 2002 | PF Industries Inc. | Front face of a masonry block |
D505733, | Feb 13 2004 | Oldcastle Building Products Canada Inc. | Artificial paving block |
D506013, | May 12 2004 | Hector Tile Company, Inc. | Landscape edging blocks |
D522667, | Nov 18 2004 | Oldcastle Building Products Canada Inc. | Artificial stone |
D537501, | Jun 04 2004 | KEYSTONE RETAINING WALL SYSTEMS, INC | Landscape stone |
D537959, | Dec 01 2004 | OLDCASTLE BUILDING PRODUCTS CANADA INC | Artificial stone |
D540954, | Oct 26 2005 | Oldcastle Building Products, Inc. | Artificial paver unit |
D543642, | Nov 18 2004 | Oldcastle Building Products Canada, Ltd. | Artificial stone |
D550375, | Dec 14 2005 | Les Materiaux de Construction Oldcastle Canada Inc. | Paver |
D553260, | Nov 18 2004 | Oldcastle Building Products Canada, Inc. | Artificial stone |
D553759, | Dec 06 2006 | OLDCASTLE BUILDING PRODUCTS CANADA, INC | Dry-cast concrete block |
D590070, | Aug 02 2007 | Oldcastle Building Products Canada Inc. | Artificial slab |
D590071, | Aug 02 2007 | Oldcastle Building Products Canada Inc. | Artificial slab |
D590072, | Aug 02 2007 | Oldcastle Building Products Canada Inc. | Artificial slab |
D606210, | Feb 28 2008 | OLDCASTLE BUILDING PRODUCTS CANADA, INC | Paver |
D618364, | Feb 11 2009 | BonnieLines LLC | Surface-covering element |
D624202, | Dec 14 2005 | Les Materiaux de Construction Oldcastle Canada Inc. | Top edge portion of a mini random look paver |
D624203, | Dec 14 2005 | Les Materiaux de Construction Oldcastle Canada Inc. | Top edge portion of a mini random look paver |
DE20101214, | |||
DE29922003, | |||
DE3533020, | |||
DE4232300, | |||
DE7122262, | |||
DE9211118, | |||
FR2354416, | |||
GB1047163, | |||
GB2208883, | |||
GB2214206, | |||
JP1180760, | |||
JP1180761, | |||
JP1180860, | |||
JP1180861, | |||
JP2002285504, | |||
JP2004124634, | |||
JP3640654, | |||
NL7415523, | |||
SE44357, | |||
WO9415025, | |||
WO144578, | |||
WO2059423, | |||
WO2095133, | |||
WO2005084900, | |||
WO2006045192, | |||
WO2009039617, | |||
WO2009140760, |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
May 20 2009 | Oldcastle Building Products Canada Inc. | (assignment on the face of the patent) | / | |||
Nov 29 2010 | LACAS, MARC-ANDRE | OLDCASTLE BUILDING PRODUCTS CANADA INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 026210 | /0602 | |
Feb 03 2011 | CASTONGUAY, BERTIN | OLDCASTLE BUILDING PRODUCTS CANADA INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 026210 | /0602 | |
Feb 03 2011 | DAOUST, ROBERT | OLDCASTLE BUILDING PRODUCTS CANADA INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 026210 | /0602 |
Date | Maintenance Fee Events |
Mar 26 2013 | ASPN: Payor Number Assigned. |
Jul 12 2016 | M1551: Payment of Maintenance Fee, 4th Year, Large Entity. |
Sep 18 2020 | M1552: Payment of Maintenance Fee, 8th Year, Large Entity. |
Nov 25 2024 | REM: Maintenance Fee Reminder Mailed. |
Date | Maintenance Schedule |
Apr 09 2016 | 4 years fee payment window open |
Oct 09 2016 | 6 months grace period start (w surcharge) |
Apr 09 2017 | patent expiry (for year 4) |
Apr 09 2019 | 2 years to revive unintentionally abandoned end. (for year 4) |
Apr 09 2020 | 8 years fee payment window open |
Oct 09 2020 | 6 months grace period start (w surcharge) |
Apr 09 2021 | patent expiry (for year 8) |
Apr 09 2023 | 2 years to revive unintentionally abandoned end. (for year 8) |
Apr 09 2024 | 12 years fee payment window open |
Oct 09 2024 | 6 months grace period start (w surcharge) |
Apr 09 2025 | patent expiry (for year 12) |
Apr 09 2027 | 2 years to revive unintentionally abandoned end. (for year 12) |